It depends on size of the data that you are storing and the block size. Here is a good primer on it: http://constantin.glez.de/blog/2011/07/zfs-dedupe-or-not-dedupe
As a quick estimate, about 5GB per 1TB or storage for SSD. However I believe that you would need even more RAM since only a 1/4 of the RAM will be used for the dedupe table with ZFS.
Thank you,
Ryan Palamara
ZAIS Group, LLC
2 Bridge Avenue, Suite 322
Red Bank, New Jersey 07701
Phone: (732) 450-7444
Ryan.palamara@xxxxxxxxxxxxx
-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Les Mikesell
Sent: Thursday, September 13, 2012 3:09 PM
To: CentOS mailing list
Subject: Re: Deduplication data for CentOS?
On Thu, Sep 13, 2012 at 12:06 PM, Ryan Palamara <Ryan.Palamara@xxxxxxxxxxxxx> wrote:
> The better option for ZFS would be to get a SSD and move the dedupe table onto that drive instead of having it in RAM, because it can become massive.
What's 'massive' in dollars these days?
--
Les Mikesell
lesmikesell@xxxxxxxxx
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